https://db.gcve.eu/sightings/feed 2026-05-22T06:16:17.832134+00:00 Vulnerability-Lookup info@gcve.eu python-feedgen Contains only the most 10 recent sightings. https://db.gcve.eu/sighting/36f1f66e-a5d0-41b7-9968-6f8d83107653/export 2026-05-22T06:16:18.194352+00:00 cedric http://db.gcve.eu/user/cedric {"uuid": "36f1f66e-a5d0-41b7-9968-6f8d83107653", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2025-46340", "type": "seen", "source": "https://t.me/cvedetector/24485", "content": "{\n \"Source\": \"CVE FEED\",\n \"Title\": \"CVE-2025-46340 - Misskey CSS Injection Vulnerability\", \n \"Content\": \"CVE ID : CVE-2025-46340 \nPublished : May 5, 2025, 7:15 p.m. | 20\u00a0minutes ago \nDescription : Misskey is an open source, federated social media platform. Starting in version 12.0.0 and prior to version 2025.4.1, due to an oversight in the validation performed in `UrlPreviewService` and `MkUrlPreview`, it is possible for an attacker to inject arbitrary CSS into the `MkUrlPreview` component. `UrlPreviewService.wrap` falls back to returning the original URL if it's using a protocol that is likely to not be understood by Misskey, IE something other than `http` or `https`. This both can de-anonymize users and_allow further attacks in the client. Additionally, `MkUrlPreview` doesn't escape CSS when applying a `background-image` property, allowing an attacker to craft a URL that applies arbitrary styles to the preview element. Theoretically, an attacker can craft a CSS injection payload to create a fake error message that can deceive the user into giving away their credentials or similar sensitive information. Version 2025.4.1 contains a patch for the issue. \nSeverity: 7.2 | HIGH \nVisit the link for more details, such as CVSS details, affected products, timeline, and more...\",\n \"Detection Date\": \"05 May 2025\",\n \"Type\": \"Vulnerability\"\n}\n\ud83d\udd39 t.me/cvedetector \ud83d\udd39", "creation_timestamp": "2025-05-05T21:44:22.000000Z"} 2025-05-05T21:44:22+00:00 https://db.gcve.eu/sighting/52ec2cd2-521d-4cdc-9735-899a579a366e/export 2026-05-22T06:16:18.193048+00:00 cedric http://db.gcve.eu/user/cedric {"uuid": "52ec2cd2-521d-4cdc-9735-899a579a366e", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2025-46340", "type": "published-proof-of-concept", "source": "Telegram/bFFhDRsz5jITaIYyr2g-Li8Bq5utseX25ZdPNGHsnlhVzGo", "content": "", "creation_timestamp": "2025-05-06T03:23:35.000000Z"} 2025-05-06T03:23:35+00:00